Nut-lock.



UNITED STATES PATENT OFFICE.

HARRY A. HEBzBERG, or NEW roma, N. Y.

NUT-LOCK.

Application tiled January 31,1914. Serial No. 815,627.

4 To all whom it may cow'wern Be it known that I, Hanni' A. Hleaanrac, acitizen of the United States,.resid1ng at 785 Lexington avnue, city,county, and- "State of New York., have invented a new vand usefulImprovement in Nut-Locks, 0f

which the following is a specification.

The object of myinvention is to make a device of this class which willpositively lock a nut aft any point that an operator "may wish to securethe saule. This object is accomplished by my invention, one embodimentof which is hereinafter set forth.

For a more particular description of my invention, reference is to behad to the accompanying drawings, forming a part hereof, in whichmFigure 1 is a .plan view of .my improved nut luck onl a bolt. Fig. 2in asectional view, taken on the line of Fig. looking in the direction ofthe arrows'. Fig. 3 is a sectionalyview, taken on the line 3' of Fig.2,'lool\`{ing in the direction of the-ar- Throughouttthe various viewsof the drawings, similar reference.characters des ignote similar parts.

My improved`\ nut lock 1 may-be lo amv suitable-'belt 2 which has right'and ileft tl'ireads' mhd 4 of the. same pitch and 'different dianietlrsso as to fit the .larger `and smaller paz-S of the nut, 5 and 6 re*spectlvely. Thesl vparts 5 and (i are sn'iveled together so that.pneinav turn on them'zher. This lis accomplished in vthe following manner: The part G isi; first made and on the part designated T. whiph issubsequently engaged by the outer poration of the nut 5, is carefullylinachined Scl, as to be true. It. is then coated by any prtptectingmaterial which .is :suital'zfle for the pfurpose and placed in themold.; The patt-cilin'for the part 5 is also 'placedl in the mold at.the same' time and withdgraivn. leavirg a suitable Cavity for theinietal which subsequently poured into the mjold. 'll'ienuiftal of thepart 5 when so poured forns a mliitable shoulder adjacent to thc: part 7and ginterlocl-:s with the same with i swivel Jiointl but cannot fusewith the samef because offl the protecting coating Specification o);vLetters Patent.

Patented Jan. 5, 1915.

above specilicd. After the Dart '5 has been properly cast, as abovedescribed, both parts 5 and are removed from the mold and finished withsuitable right and left threads so as to fit the parts 3 and 4respectively, as shown. then the nut 1 is applied to the bolt i2, thepart 5 is turned one Way and the part 6 the other, and then the nut isadvanced on to the bolt. Bv reversing lthe movement it is withdrawn fromthe bolt.

ln the modification above described the pitch of the threads .3 and 4 isthe same, so that the parts 5 und 6 are turned the'same amount inopposite directions. By having the pitch of the thread 4 greater or lessthan the pitch of the thread 3, the parts 6 or 5 are turned less or morerapidly relatively to each other, as is obvious. In anyv event the nut 1is applied to the bolt.2,'or removed therefrom by turninof the parts'iviand simultaneously in opposite directidl'iei.` lf there is any, playbetween .theseparts''- and 6 it is not necessary to turnthem'sinultaneously, but.A one may he turned .a lfew dei grecs withoutmoving the'other, and'then the other may be turned so that they may heturned alternately.

While I have shown and described some embodiments of my invention, Vitis vobviousA that it is not restricted thereto .-but is broad within thescope of the annexed claims. What I claim is :V x

1. A nut composed of tivo parts, one

swiveled on the other so that the parts 'canv85 not be separated,v one.of said' parts being" provided with right threads and the otherA`v .vithleft threads. i 2. A bolt provided with right andl leftthreads, a nutwith tivo parts siviveled. on 9.0

FRED DIEFFENBAGH, Jr.,

80 enough to cover all structures that come

